8 results about "Shock sensitivity" patented technology

The invention discloses an inner salt type high-energy density insensitive explosive and a preparation method thereof, 9-amino-2, 6-dinitro-bis [1, 2, 4] triazolo [1, 3, 5] triazine, namely ZDTT, is prepared, and the ZDTT has the performance advantages of high energy density and insensitivity and also has the advantage of simple synthesis process; zDTT has a unique inner salt type condensed ring structure and is insoluble in water and conventional organic solvents. The ZDTT actual measurement density is 1.881 g.cm <-3 >, the detonation velocity is 8757 m.s <-1 >, the detonation pressure is 31.7 GPa, the initial thermal decomposition temperature is 330 DEG C, the impact sensitivity is larger than 40 J, the friction sensitivity is larger than 360 N, and the high-energy-density insensitive explosive has huge application potential in the field of high-energy-density insensitive explosives.

The invention belongs to the technical field of safety of energetic materials, and particularly discloses a method for determining a thermal-mechanical coupling ignition threshold value of an energetic material, which comprises the following steps: firstly, heating an energetic material sample to a preset specific temperature, simulating a possible thermal environment of the energetic material sample, and then immediately carrying out an impact sensitivity test at the temperature to determine the thermal-mechanical coupling ignition threshold value of the energetic material. And thus, a safety threshold closer to an actual risk scene is obtained. According to the determination method, the safety threshold closer to the actual risk scene can be obtained, and the method has the characteristics of comprehensive evaluation and accurate and reliable test result.

The application provides a TNBA cast explosive and a preparation method thereof, and belongs to the technical field of cast explosive preparation. The TNBA cast explosive is prepared according to the mass percentage of 50.6-55.2% of a liquid carrier, 4.4-4.8% of a fluxing agent and 40-45% of a solid filler. The TNBA cast explosive prepared by the application has the following advantages: the liquid carrier and the fluxing agent have high density, low volatility, low toxicity, low sensitivity and good formability, and no shrinkage hole and crack after pouring; the solid filler has the characteristics of high energy, low sensitivity, high density and high explosion heat; the raw material cost is low, the preparation process is simple, and the explosive can be produced on a large scale; compared with the existing explosives, the cast explosive has high oxygen balance, can generate more heat, has high density, detonation velocity, explosion heat and explosion pressure, and low impact sensitivity, and has higher performance than ordinary explosives.

The application discloses a high-energy heat-resistant energetic complex Li-ZDPT and a preparation method thereof. A novel high-energy heat-resistant explosive preparation method with simple preparation process, mild reaction condition and high yield is developed by taking 3,5-diamino-4-nitro pyrazole as a starting material, and a high-energy heat-resistant explosive Li-ZDPT with novel structure and excellent comprehensive performance is prepared. In addition to the characteristics of high energy and high heat stability, the Li-ZDPT also has the advantages of simple preparation method and high yield. The thermal decomposition temperature of the Li-ZDPT is as high as 436 DEG C, the theoretical detonation velocity is 8096 m / s ‑1 , the actual measured impact sensitivity is greater than 40 J, and the friction sensitivity is greater than 360 N. The excellent comprehensive performance of the Li-ZDPT makes it have great application potential in the field of high-energy heat-resistant explosives.

The application provides a kind of explosive performance simulation design method based on energy, safety and process, comprising: step one, the simulation model between the chemical composition of explosive formula and detonation velocity is established, that is, the energy performance simulation model of explosive formula;Step two, the simulation model between the sensitizing chemical group contained in explosive formula and impact sensitivity is established, that is, the safety performance simulation model of explosive formula;Step three, the simulation model between the average particle size of raw material in explosive formula and dynamic viscosity is established, that is, the process performance simulation model of explosive formula;Step four, on the basis of step one, step two and step three, the comprehensive performance characterization parameter is taken as the comprehensive processing result of explosive detonation velocity, explosive impact sensitivity and explosive dynamic viscosity, and the comprehensive performance simulation model of explosive formula is established.The simulation model construction method involved in the application has clear and distinct levels, the comprehensive performance characterization parameter is formed by linear weighting of detonation velocity, impact sensitivity and dynamic viscosity, so that the comprehensive performance of a group of explosive formulas with different component contents is analyzed and compared, and has a wide range of application.

Explosives using thermally expandable microspheres (TEMs) in a solid matrix are disclosed that facilitate tunable changes in local density, porosity, and ultimately, shock sensitivity. Solid high explosive systems with “on demand” shock sensitivity may be created. A relatively small fraction (e.g., 1% or less) of TEMs may incorporated during the manufacturing process of the solid matrix explosive (e.g., polymer-bonded explosives (PBX), trinitrotoluene (TNT), etc.). The fraction of TEMs used to achieve the desired explosive properties will depend on the base explosive material to achieve the desired initiation sensitivity.

The application discloses an inner salt type high-heat-resistant explosive and a preparation method thereof, and 2,6-diamino-9-amino-3,5-dinitrodipyrazolotriazine, namely ZDPT, is prepared. In addition to the performance advantages of high energy and high heat resistance, the ZDPT also has the advantages of simple synthesis method and low process cost. Single crystal X-ray diffraction test shows that the ZDPT has a unique inner salt type and three-fused ring skeleton structure and is insoluble in water and conventional organic solvents. The thermal decomposition temperature of the ZDPT is as high as 380 DEG C, the actual measured impact sensitivity is greater than 40 J, the friction sensitivity is greater than 360 N, and the ZDPT has great application potential in the field of high-energy heat-resistant explosives.

The application discloses a kind of gel-like energetic material continuous pushing device and its related system, device and method, the gel-like energetic material can be stably filled in water gap for a long time without shell and connect gap positive and negative electrode.Other ingredients do not contain explosive in dangerous goods item, common formula is the mixture containing nitromethane, aluminum powder, metal oxide, friction sensitivity and impact sensitivity are zero after test of initiating explosive, safety is extremely high.And formula component is not soluble or very difficult to dissolve in water, not fail, not decompose under long-time soaking in water, still can be normally initiated under the action of pulse current.Gel-like energetic material is filled in water gap and can generate fixed amplitude, impulse and energy shock wave under the driving of specific parameter pulse source, with excellent repeatability.Compared with original parameter, water gap discharge greatly improves the amplitude, impulse and energy of shock wave, with great engineering application prospect.